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Finding the Fourth Proportional to 713,053.06, 984,013.22 and 390,770.60

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Solution

The fourth proportional to 713,053.06, 984,013.22 and 390,770.60 is: 539,263.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,053.06 : 984,013.22 = 390,770.60 : x
  2. Step 2: Convert to fraction form
    713,053.06/984,013.22 = 390,770.60/x
  3. Step 3: Cross multiply
    713,053.06x = 984,013.22 × 390,770.60
  4. Step 4: Simplify right side
    713,053.06x = 384,523,432,444.19
  5. Step 5: Solve for x
    x = 384,523,432,444.19/713,053.06
  6. Step 6: Final answer
    x = 539,263.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.